Jaw exercising device



FIG. 1 is a front-top-right side perspective view of a jaw exercisingdevice showing my new design;

FIG. 2 is a right-top side perspective view thereof;

FIG. 3 is a rear-top-right side perspective view thereof; and

FIG. 4 is a right side elevational view thereof; and,

FIG. 5 is a top plan view thereof.

The ornamental design for a jaw exercising device, as shown.